From 8fa1d06a6a7bf3d00ac87319ac71953237535c43 Mon Sep 17 00:00:00 2001
From: eZio Pan <eziopan@qq.com>
Date: Sat, 23 Mar 2024 09:04:09 +0800
Subject: [PATCH] stm32 CORDIC: use private_bounds for sealed traits.

---
 embassy-stm32/src/cordic/mod.rs    | 16 ++++++----------
 embassy-stm32/src/cordic/sealed.rs |  2 +-
 2 files changed, 7 insertions(+), 11 deletions(-)

diff --git a/embassy-stm32/src/cordic/mod.rs b/embassy-stm32/src/cordic/mod.rs
index 2479e1b27..6bbc48f2b 100644
--- a/embassy-stm32/src/cordic/mod.rs
+++ b/embassy-stm32/src/cordic/mod.rs
@@ -11,16 +11,11 @@ pub use enums::*;
 mod errors;
 pub use errors::*;
 
+mod sealed;
+use self::sealed::SealedInstance;
+
 pub mod utils;
 
-pub(crate) mod sealed;
-
-/// Low-level CORDIC access.
-#[cfg(feature = "unstable-pac")]
-pub mod low_level {
-    pub use super::sealed::*;
-}
-
 /// CORDIC driver
 pub struct Cordic<'d, T: Instance> {
     peri: PeripheralRef<'d, T>,
@@ -28,7 +23,8 @@ pub struct Cordic<'d, T: Instance> {
 }
 
 /// CORDIC instance trait
-pub trait Instance: sealed::Instance + Peripheral<P = Self> + crate::rcc::RccPeripheral {}
+#[allow(private_bounds)]
+pub trait Instance: SealedInstance + Peripheral<P = Self> + crate::rcc::RccPeripheral {}
 
 /// CORDIC configuration
 #[derive(Debug)]
@@ -609,7 +605,7 @@ foreach_interrupt!(
         impl Instance for peripherals::$inst {
         }
 
-        impl sealed::Instance for peripherals::$inst {
+        impl SealedInstance for peripherals::$inst {
             fn regs() -> crate::pac::cordic::Cordic {
                 crate::pac::$inst
             }
diff --git a/embassy-stm32/src/cordic/sealed.rs b/embassy-stm32/src/cordic/sealed.rs
index f9521ff7a..8f0bd1830 100644
--- a/embassy-stm32/src/cordic/sealed.rs
+++ b/embassy-stm32/src/cordic/sealed.rs
@@ -2,7 +2,7 @@ use super::*;
 use crate::pac::cordic::vals;
 
 /// Cordic instance
-pub trait Instance {
+pub(super) trait SealedInstance {
     /// Get access to CORDIC registers
     fn regs() -> crate::pac::cordic::Cordic;